Air bag driving shield tunneling machine rotating body moving system

Abstract

The utility model relates to the technical field of shield tunnel engineering, in particular to an air bag driving shield tunneling machine rotating body moving system. The system comprises a receiving bracket and a rotating body moving assembly. A shield body is arranged on the receiving bracket; the rotating body moving assembly is connected with the receiving bracket and comprises a trundle bag, a propelling spray pipe, a first air compressor and a second air compressor. The plurality of trundle bags are uniformly distributed at the bottom of the receiving bracket; each trundle bag comprises a bag pressure chamber and a bag hollow chamber arranged on the periphery of the bag pressure chamber, and the bag pressure chamber and the bag hollow chamber are connected with the first air compressor through first pipelines. A plurality of air overflow holes facing the ground are uniformly formed in the bag hollow chamber; the multiple propelling spray pipes are arranged at the rear end of the receiving bracket in the moving direction. And each propelling spray pipe is connected with a second air compressor through a second pipeline. The device is high in construction efficiency, high in construction safety and low in cost.

Description

Technical Field

[0001] This utility model relates to the field of shield tunnel engineering technology, specifically to an airbag-driven shield machine rotation and movement system. Background Technology

[0002] Urban rail transit projects are generally carried out in cities, where tunnel boring machine (TBM) construction sites are limited. Due to space constraints, a single TBM is typically used to construct one tunnel first. After the TBM exits the tunnel, the shield body is disassembled and moved in sections using large cranes to the starting support of another tunnel. The shield body is then reassembled, tested, and excavated again. This TBM transfer scheme has a series of problems, specifically: 1) Low construction efficiency: disassembling, moving, assembling, and testing the TBM typically takes at least two months; 2) High safety risks: moving the TBM requires large cranes, resulting in high safety risks during the process; 3) High construction costs: high crane rental fees and long construction periods lead to high costs. Therefore, research on the rotation and movement of TBMs has significant social and economic benefits.

[0003] In summary, there is a need to provide an airbag-driven shield tunneling machine rotation and movement system to solve the problems of low construction efficiency, high construction safety risks, and high costs in existing shield tunneling machine rotation and movement technologies. Utility Model Content

[0004] The purpose of this utility model is to provide an airbag-driven shield tunneling machine rotation and movement system, the specific technical solution of which is as follows:

[0005] A pneumatically driven shield tunneling machine rotation and movement system includes a receiving bracket and a rotation and movement assembly. The shield body of the shield tunneling machine is mounted on the receiving bracket. The rotation and movement assembly is connected to the receiving bracket and includes caster pneumatic bags, propulsion nozzles, a first air compressor, and a second air compressor. Multiple caster pneumatic bags are evenly distributed at the bottom of the receiving bracket. Each caster pneumatic bag includes a pressure chamber and a hollow chamber located on the outer periphery of the pressure chamber, both connected to the first air compressor via a first pipeline. Multiple air vents facing the ground are evenly distributed on the hollow chamber. Multiple propulsion nozzles are also present, all located at the rear end of the receiving bracket in the direction of movement. Each propulsion nozzle is connected to the second air compressor via a second pipeline.

[0006] Optionally, the propulsion nozzle has a variable diameter structure.

[0007] Optionally, the opening size of the outlet end of the propulsion nozzle is smaller than the opening size of the inlet end.

[0008] Optionally, a variable diameter channel is provided between the outlet end and the inlet end of the propulsion nozzle; the inner diameter of the variable diameter channel is smaller than the opening size of the outlet end, and the inner diameter of the variable diameter channel increases sequentially along the outlet direction of the propulsion nozzle.

[0009] Optionally, a first flow meter and a first pressure gauge are installed on the first pipeline; a second flow meter and a second pressure gauge are installed on the second pipeline.

[0010] Optionally, the airbag-driven shield machine rotation and movement system further includes a first seal and a second seal; the first seal is respectively provided between the airbag pressure chamber and the first pipeline and between the airbag hollow chamber and the first pipeline; the second seal is provided between the propulsion nozzle and the second pipeline.

[0011] Optionally, the airbag-driven shield machine rotation and movement system further includes anti-overturning support blocks; there are multiple anti-overturning support blocks, which are respectively fixedly installed on both sides of the receiving bracket along the length direction and connected to the shield body of the shield machine.

[0012] Optionally, the airbag-driven shield machine rotation and movement system further includes a first traction component; the first traction component includes a first traction vehicle and a first wire rope; the first traction vehicle is located at the front end of the receiving bracket in the direction of movement and is connected to the cutterhead of the shield body of the shield machine through the first wire rope.

[0013] Optionally, the airbag-driven shield machine rotation and movement system further includes a second traction component; the second traction component includes a second traction vehicle and a second wire rope; the second traction vehicle is located at the rear end of the receiving bracket in the direction of movement and is connected to the tail of the shield body of the shield machine through the second wire rope.

[0014] Optionally, the airbag-driven shield machine rotation and movement system further includes an operating platform; the operating platform includes a PLC controller; the first air compressor, the second air compressor, the first flow meter, the first pressure gauge, the second flow meter, the second pressure gauge, the first tractor, and the second tractor are respectively connected to the PLC controller.

[0015] The application of the technical solution of this utility model has at least the following beneficial effects:

[0016] (1) The present invention provides an airbag-driven shield machine rotation and movement system, which can solve the problems of low construction efficiency, high construction safety risk, and high cost in existing shield machine rotation and movement technologies. Specifically, the present invention combines caster airbags and a first air compressor. Compressed air is gradually injected into the pressure chamber of the airbag by the first air compressor, causing the pressure chamber of the airbag to gradually expand and lift the receiving bracket and the shield body. Subsequently, compressed air is gradually injected into the hollow chamber of the airbag by the first air compressor and flows out through the overflow hole, so that an airflow layer is formed between the caster airbag and the ground, so as to reduce the friction between the shield body and the ground through buoyancy. The present invention combines a propulsion nozzle and a second air compressor. The second air compressor injects compressed air into the propulsion nozzle so that the compressed air is ejected from the propulsion nozzle to propel the shield body to rotate and move. The present invention not only has low construction cost and high construction safety, but also can shorten the rotation and movement construction time to 4 days (of which, the forward movement takes 2 days and the two 90° shield rotations each take 1 day), which greatly improves the construction efficiency. In addition, this invention uses compressed air as a power source, which has the advantage of good environmental protection.

[0017] (2) The variable diameter propulsion nozzle adopted in this utility model can improve the power of propulsion shield body rotation and ensure the smooth rotation of shield body.

[0018] In addition to the objectives, features, and advantages described above, this utility model has other objectives, features, and advantages. The present utility model will now be described in further detail with reference to the figures. Attached Figure Description

[0019] The accompanying drawings, which form part of this application, are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an undue limitation of the present invention. In the drawings:

[0020] Figure 1 This is a top view of the operation process of an airbag-driven shield machine rotation and movement system in the embodiment (the arrows in the figure indicate the direction of rotation and movement of the shield body);

[0021] Figure 2 This is a front perspective view of an airbag-driven shield tunneling machine rotation and movement system in one embodiment (the arrows in the figure indicate the airflow direction);

[0022] Figure 3 This is a schematic diagram of the structure of an airbag-driven shield tunneling machine rotation and movement system along the movement direction in one embodiment (the arrow in the figure indicates the airflow direction);

[0023] Figure 4 This is a top perspective view of an airbag-driven shield machine rotation and movement system in one embodiment (the arrows in the figure indicate the direction of airflow);

[0024] Among them, 1. Receiving bracket, 2. Caster bag, 2.1. Bag pressure chamber, 2.2. Bag hollow chamber, 3. Propulsion nozzle, 3.1. Air outlet, 3.2. Variable diameter channel, 4. First air compressor, 5. Second air compressor, 6. Anti-overturning support block, 7. First tractor, 8. First wire rope, 9. Second tractor, 10. Second wire rope, 11. Operating platform, A. Shield body, B. Left tunnel line, C. Receiving shaft, D. Right tunnel line. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model are within the protection scope of the present utility model.

[0026] Example:

[0027] See Figures 1-4 A system for rotating and moving a tunnel boring machine (TBM) using airbags includes a receiving bracket 1 and a rotating and moving assembly. The TBM shield A is mounted on the receiving bracket 1. The rotating and moving assembly is connected to the receiving bracket 1 and includes caster airbags 2, propulsion nozzles 3, a first air compressor 4 (i.e., an air compressor), and a second air compressor 5 (i.e., an air compressor). There are eight caster airbags 2, evenly distributed at the bottom of the receiving bracket 1. Each caster airbag 2 includes a pressure chamber 2.1 and a hollow chamber 2.2 located around the pressure chamber 2.1, both connected to the first air compressor 4 via a first pipeline. Multiple air vents (not shown in the figure) facing the ground are evenly distributed on the hollow chamber 2.2. There are eight propulsion nozzles 3, all located at the rear end of the receiving bracket 1 in the direction of movement. Each propulsion nozzle 3 is connected to the second air compressor 5 via a second pipeline. This embodiment combines a caster bag 2 and a first air compressor 4. Compressed air is gradually injected into the pressure chamber 2.1 of the bag by the first air compressor 4, causing the pressure chamber 2.1 to gradually expand and lift the receiving bracket 1 and the shield A. Subsequently, compressed air is gradually injected into the hollow chamber 2.2 of the bag by the first air compressor 4 and flows out through the overflow hole, so that an airflow layer is formed between the caster bag 2 and the ground, so as to reduce the friction between the shield A and the ground through buoyancy. This utility model combines a propulsion nozzle 3 and a second air compressor 5. The second air compressor 5 injects compressed air into the propulsion nozzle 3 so that the compressed air ejected from the propulsion nozzle 3 propels the shield A to rotate and move.

[0028] The propulsion nozzle 3 has a variable diameter structure, which can improve the power of propulsion shield A to rotate and move, and ensure that shield A rotates and moves smoothly.

[0029] The opening size of the outlet end 3.1 of the propulsion nozzle 3 is smaller than the opening size of the inlet end in order to increase the gas flow velocity at the outlet end 3.1 and improve the propulsion power.

[0030] A variable diameter channel 3.2 is provided between the outlet end 3.1 and the inlet end of the propulsion nozzle 3; the inner diameter of the variable diameter channel 3.2 is smaller than the opening size of the outlet end 3.1, and the inner diameter of the variable diameter channel 3.2 increases sequentially along the outlet direction of the propulsion nozzle 3, in order to increase the gas flow velocity at the outlet end 3.1 and improve the propulsion power.

[0031] A first flow meter (not shown in the figure) and a first pressure gauge (not shown in the figure) are installed on the first pipeline. The first flow meter is used to adjust the air flow rate to the pressure chamber 2.1 and the hollow chamber 2.2 of the reaction bag, and the first pressure gauge is used to monitor the pressure status of the pressure chamber 2.1 and the hollow chamber 2.2 of the reaction bag in real time. A second flow meter (not shown in the figure) and a second pressure gauge (not shown in the figure) are installed on the second pipeline. The second flow meter is used to adjust the air flow rate to the propulsion nozzle 3, and the second pressure gauge is used to monitor the pressure status of the propulsion nozzle 3 in real time.

[0032] The airbag-driven shield machine rotation and movement system further includes a first sealing element (such as a sealing ring, not shown in the figure) and a second sealing element (such as a sealing ring, not shown in the figure); the first sealing element is respectively installed between the airbag pressure chamber 2.1 and the first pipeline and between the airbag hollow chamber 2.2 and the first pipeline to prevent air leakage between the airbag pressure chamber 2.1 and the first pipeline and between the airbag hollow chamber 2.2 and the first pipeline; the second sealing element is installed between the propulsion nozzle 3 and the second pipeline to prevent air leakage between the propulsion nozzle 3 and the second pipeline.

[0033] The airbag-driven shield machine rotation and movement system also includes anti-overturning support blocks 6; there are 19 anti-overturning support blocks 6, which are symmetrically fixed (e.g., welded) on both sides of the receiving bracket 1 along its length and connected (e.g., welded) to the shield body A of the shield machine to prevent the shield body A from overturning.

[0034] The airbag-driven shield machine rotation and movement system also includes a first traction component; the first traction component includes a first traction vehicle 7 and a first steel wire rope 8; the first traction vehicle 7 is located at the front end of the receiving bracket 1 in the direction of movement, and is connected to the cutterhead of the shield body A of the shield machine through three strands of the first steel wire rope 8 (such as hook connection), for traction of the receiving bracket 1 to rotate and move; wherein, the three strands of the first steel wire rope 8 are not coplanar.

[0035] The airbag-driven shield machine rotation and movement system also includes a second traction component; the second traction component includes a second traction vehicle 9 and a second steel wire rope 10; the second traction vehicle 9 is located at the rear end of the receiving bracket 1 in the direction of movement, and is connected to the tail of the shield body A of the shield machine through three strands of the second steel wire rope 10 (such as hook connection) to prevent the receiving bracket 1 from shifting; wherein, the three strands of the second steel wire rope 10 are not coplanar.

[0036] The airbag-driven shield machine rotation and movement system also includes an operating platform 11; the operating platform 11 includes a PLC controller; the first air compressor 4, the second air compressor 5, the first flow meter, the first pressure gauge, the second flow meter, the second pressure gauge, the first tractor 7, and the second tractor 9 are respectively connected to the PLC controller.

[0037] The airbag-driven shield machine rotation and movement system can drive shield A from tunnel left line B through receiving shaft C to tunnel right line D. Its operation process is as follows:

[0038] First, the PLC controller starts the first air compressor 4 to gradually inject compressed air into the pressure chamber 2.1 of the bag, causing the pressure chamber 2.1 of the bag to gradually expand and lift the receiving bracket 1 and the shield body A; then, the first air compressor 4 continues to be started to gradually inject compressed air into the hollow chamber 2.2 of the bag, and the compressed air flows out through the overflow hole, so that an airflow layer is formed between the caster bag 2 and the ground, so as to reduce the friction between the shield body A and the ground through buoyancy;

[0039] Secondly, the PLC controller is used to start the second air compressor 5 to inject compressed air into the propulsion nozzle 3 so that the compressed air is ejected from the propulsion nozzle 3 to propel the shield body A to rotate and move. The forward movement of the shield body A takes 2 days, and the two 90° rotations of the shield body A each take 1 day. This can shorten the construction time of the shield body A to 4 days, which greatly improves the construction efficiency.

[0040] During the rotation operation of shield A, the PLC controller is used to adjust the second air compressor 5 to reduce the air flow and pressure in the inner propulsion nozzle 3 when rotating towards shield A, while increasing the air flow and pressure in the outer propulsion nozzle 3 when rotating towards shield A, so as to ensure the smooth completion of the rotation operation.

[0041] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. An airbag-driven shield machine swivel movement system, characterized in that The utility model provides a shield machine shield body is provided on receiving bracket (1), and the receiving bracket (1) is connected with the rotation body moving assembly, and the rotation body moving assembly includes the caster pocket (2), the propelling nozzle (3), the first air compressor (4) and the second air compressor (5), the number of caster pocket (2) is a plurality, and is evenly distributed in the bottom of receiving bracket (1), each caster pocket (2) includes the pocket pressure chamber (2.1) and the pocket hollow chamber (2.2) of setting in the pocket pressure chamber (2.1) periphery, and is connected with first air compressor 4 through first pipeline respectively, a plurality of ground -facing overflow holes are evenly arranged on the pocket hollow chamber (2.2), the number of propelling nozzle (3) is a plurality, and is evenly arranged in the rear end of receiving bracket (1) moving direction, and each propelling nozzle (3) is connected with second air compressor (5) through second pipeline respectively.

2. The airbag-driven shield machine swivel movement system according to claim 1, characterized in that The propelling nozzle (3) is a variable diameter structure.

3. The airbag-driven shield machine swivel movement system according to claim 2, characterized in that The opening size of the gas outlet end (3.1) of the propelling nozzle (3) is smaller than that of the gas inlet end.

4. The airbag-driven shield machine swivel movement system according to claim 3, characterized in that A variable diameter channel (3.2) is arranged between the gas outlet end (3.1) and the gas inlet end of the propelling nozzle (3); the inner diameter size of the variable diameter channel (3.2) is smaller than the opening size of the gas outlet end (3.1), and the inner diameter size of the variable diameter channel (3.2) increases in turn along the gas outlet direction of the propelling nozzle (3).

5. The airbag-driven shield machine swivel movement system according to any one of claims 1 to 4, characterized in that A first flow meter and a first pressure gauge are arranged on the first pipeline; a second flow meter and a second pressure gauge are arranged on the second pipeline.

6. The airbag-driven shield machine swivel movement system according to claim 5, characterized in that First and second seals are further included; the first seals are arranged between the pocket pressure chamber (2.1) and the first pipeline and between the pocket hollow chamber (2.2) and the first pipeline respectively; the second seal is arranged between the propelling nozzle (3) and the second pipeline.

7. The balloon-driven shield machine swivel movement system according to claim 5, characterized in that Anti-overturning supporting blocks (6) are further included; the number of anti-overturning supporting blocks (6) is a plurality, and is fixedly arranged on both sides of the length direction of the receiving bracket (1) respectively, and is connected with the shield machine shield body.

8. The balloon-driven shield machine swivel movement system according to claim 7, characterized in that A first traction assembly is further included; the first traction assembly includes a first traction vehicle (7) and a first steel wire rope (8); the first traction vehicle (7) is arranged at the front end of the moving direction of the receiving bracket (1), and is connected with the cutterhead of the shield machine shield body through the first steel wire rope (8).

9. The balloon-driven shield machine swivel movement system according to claim 8, characterized in that A second traction assembly is further included; the second traction assembly includes a second traction vehicle (9) and a second steel wire rope (10); the second traction vehicle (9) is arranged at the rear end of the moving direction of the receiving bracket (1), and is connected with the shield tail of the shield machine shield body through the second steel wire rope (10).

10. The balloon-driven shield machine swivel movement system according to claim 9, characterized in that An operation platform (11) is further included; the operation platform (11) includes a PLC controller; the first air compressor (4), the second air compressor (5), the first flow meter, the first pressure gauge, the second flow meter, the second pressure gauge, the first traction vehicle (7) and the second traction vehicle (9) are connected with the PLC controller respectively.

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